Crossovers and driver burn-in process! I use a frequency sweep from 5Hz up to 100KHz sweep using sine wave and then square wave. Then I play different type of music for long hours. I used Bees Wax to cover the crossover components (only two inductors) the resistor is mounted at the back of the speaker on a radiator.
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Hi,
Nice and interesting project. From Stereoplay article about Sonus Faber Extrema, it is not enough clear to me, whether there is added mass on the B-139 diaphragm??
Secondly, anyone have idea what approx. should be the value of the resistors attached to B-139 coil terminals? It seems that there are 5 different values, each of which give apropriate LF response centered about 50Hz.
regards,
Nice and interesting project. From Stereoplay article about Sonus Faber Extrema, it is not enough clear to me, whether there is added mass on the B-139 diaphragm??
Secondly, anyone have idea what approx. should be the value of the resistors attached to B-139 coil terminals? It seems that there are 5 different values, each of which give apropriate LF response centered about 50Hz.
regards,
Thanks Sala! It's been a challenging project. I will post more pics soon. For the resistors, I am using 5 values, starting from 0Ohm (total shunt) up to four times the value of the Impedance of the driver. 0, 2, 4, 8, 16, 32 Ohm. I just guessed the values!! Can someone help me with the black paint? What type of Primer and Paint is best for this project? The manual says it uses a Black-satin lacquer paint.
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